they can handle 500rwhp....the 4v are like the 5.0, it gonna depend on who you talk to what they say. i know for a fact there are 3 guys around me running ~500rwhp on 99+ gt's...but we do have one of the best mustang tuners in the country 40mins away

 

http://www.lethalperformance.com/pag...0020-over.html

i bought those pistons cept mine ate 10cc for a 9.4:1 comp ratio

http://www.lethalperformance.com/pag...-22mm-pin.html

those rods.

http://www.lethalperformance.com/pag...-020-over.html

those rings


I also have an extra forged crank out of an 04 mach 1 if you're interested.

 

^ mmmm i smell lots of boost coming